第一篇:初一數(shù)學期末試卷1
初一數(shù)學期末試卷1
一、選擇題(每小題1分,共10分)
1.下列關(guān)于單項式的說法正確的是()
A.系數(shù)是3,次數(shù)是2
B.系數(shù)是次數(shù)是2 C.系數(shù)是,次數(shù)是3
D.系數(shù)是-,次數(shù)是3 2.下列事件中,不確定事件的個數(shù)為()①若x是有理數(shù),則
②丹丹每小時可以走20千米
③從一副撲克牌中任意抽取一張,這張撲克牌是大王。
④從裝有9個紅球和1個白球的口袋中任意摸出一個球,這個球是紅球
A.1個
B.2個
C.3個
D.4個 3.要把人類送上火星,還有許多航天技術(shù)問題需要解決,如:已知一個成年人平均每年呼吸氧氣6.57×升,而目前飛船飛往火星來回一趟需2年時間,如果飛船上有3名宇航員,那么來回一趟理論上需要氧氣((氧氣是1.43克/升,結(jié)果用科學記數(shù)法表示,保留三位有效數(shù)字)
A.B.C.D.4.鈍角三角形的三條高所在直線的交點在()
A.三角形內(nèi)
B.三角形外
C.三角形邊上
D.不能確定 5.下列不能用平方差公式計算的是()A.B.C.D.6.在西部山區(qū)有位希望中學的學生站在鏡子面前,那么他的?;赵阽R子里的成像是()
7.小馬虎在下面的計算中,只做對了一道題,他做對的題目是()A.B.)克,C.D.8.在△ABC中,∠ABC與∠ACB的平分線交于點I,∠ABC+∠ACB=100°,則∠BIC的度數(shù)為()
A.80°
B.50°
C.100°
D.130° 9.如下的四個圖中,∠1與∠2是同位角的有()
①
②
③
④
A.②③
B.①②③
C.①②④
D.①
10.一根蠟燭長20厘米,點燃后每小時燃燒5厘米,燃燒時剩下的高度h(厘米)與燃燒時間t(小時)的關(guān)系用圖像表示為()
二、填空題(每小題2分,共20分)1.多項式
有()項,次數(shù)為()次.2.下列數(shù)據(jù)是近似數(shù)的有()。(填序號)①小紅班上有15個男生:
②珠穆朗瑪峰高出海平面8844.43米。
③聯(lián)合國2001年2月27日曾發(fā)表了一項人口報告,說今后5年內(nèi)全球預(yù)計有1550萬人死于艾滋病,現(xiàn)在看來不止這個數(shù)目。④玲玲的身高為1.60米。
3.觀察下面的平面圖形,其中是軸對稱圖形的是()。(填序號)
4.一個均勻小立方體的6個面上分別標有數(shù)字1,2,3,4,5,6,任意擲出這個小立方體,則擲出數(shù)字是3的倍數(shù)的概率是()。5.如圖,扇形OAB的半徑為10,當扇形圓心角的度數(shù)變化時,扇形的面積也隨之變化,在這個變化過程中,自變量是(),因變量是(。)
6.一個圓的半徑為r,另一個圓的半徑是這個圓的半徑的5倍,這兩個圓的周長之和是()。
7.有長度為2厘米,6厘米,8厘米,9厘米的四條線段,選擇其中三條組成三角形,有()種組成方法。
8.如圖,直線AB與CD相交于點O,OE⊥AB,OF⊥CD,如果∠EOF= 則∠EOF=()度。
∠AOD,9.如圖,△ABC中,AD是BC邊上的高,AE平分∠BAC,∠B=70°,∠C=40°,則 ∠DAE=()度,∠AEC=()度.10.如圖是小明用火柴搭的1條、2條、3條“金魚”,按此規(guī)律,則搭第n條“金魚”時需要火柴()根。(第一條魚用了8根火柴)。
三、(每題7分,共14分)1.計算:2.先化簡,在求值:,其中
四、(第1題6分,第2題8分,共14分)
1.如圖,在由小正方形組成的L形圖形中,請你用三種不同方法分別在下面圖形中添畫一個小正方形使它成為軸對稱圖形。
2.如圖,是經(jīng)專家論證得出來的某市新開發(fā)的海港2007-2011年的港口吞吐量規(guī)劃統(tǒng)計圖。
(1)(4分)看圖,簡述該港五年規(guī)劃的特征:(寫出兩點即可)(2)(4分)海港開發(fā)將有力拉動該市的經(jīng)濟發(fā)展,如果每萬噸吞吐量能給該市帶來10萬元的收入,按規(guī)劃五年內(nèi)海港共給該市財政增加多少億元的收入?
五、(第1題7分,第2題8分,共15分)
1.小東找來一張掛歷畫包數(shù)學課本。已知課本長a厘米,寬b厘米,厚c厘米,小東想在包課本的封面與封底時,書皮每一邊都折進去m厘米,問小東應(yīng)在掛歷畫上裁下一塊多大面積的長方形? 2.下圖是某廠一年的收入變化圖,根據(jù)圖像回答,在這一年中:
①(4分)什么時候收入最高?什么時候收入最低?最高收入和最低收入各是多少? ②(1分)6月份的收入是多少? ③(1分)哪個月的收入為400萬元? ④(1分)哪段時間收入不斷增加? ⑤(1分)哪段時間收入不斷減少?
六、(8分)如圖,已知∠1+∠2=180°,∠A=∠C,試說明AF∥CE
七、(8分)甲、乙兩人想利用轉(zhuǎn)盤游戲來決定誰在今天值日。如圖是一個可以自由轉(zhuǎn)動的轉(zhuǎn)盤,轉(zhuǎn)動轉(zhuǎn)盤,當轉(zhuǎn)盤停止轉(zhuǎn)動時,若指針指向紅色區(qū)域,則甲值日,否則,乙值日。此游戲?qū)滓译p方公平嗎?為什么?
八、(11分)如圖1,2,四邊形ABCD是正方形(AD=AB,∠A=90°,∠ABC=∠CBM=90°)M是AB延長線上的一點。直角三角尺的一條直角邊經(jīng)過點D,且直角頂點E在AB邊上滑動(E不與點A,B重合),另一條直角邊與∠CBM的平分線BF相交于點F。
(1)(9分)當點E在AB邊的中點位置如圖1時,連接點E與AD邊的中點N,試說明NE=BF;(2)(2分)當點E在AB邊的任意位置如圖2時,N在線段AD的什么位置時,NE=BF?不必說明理由。
圖1
圖2 【試題答案】
一、選擇題
1.D.B
3.C
4.B
5.C
6.B
7.D
8.D
9.C
10.B
二、填空題
1.4
2.②③④
3.①②③
4.5.扇形圓心角的度數(shù)
扇形的面積
6.7.2
8.30°
9.15
10.8+6(n-1)
三、1.-1 2.原式=,當a=-1,b=-2時,原式= -16
四、1.2.(1)吞吐量逐年增加,起始三年增長速度慢,后兩年增長速度較快,2011年吞吐量是(2)16億元。
五、1.2.(1)12月份最高,收入500萬元,8月份收入最低,收入100萬元。(2)200萬元(3)1月份
(4)8月——12月(5)1月——8月。
六、因為 ∠1+∠2=180°
所以DC∥AB 所以∠A=∠FDC 又因為∠A=∠C 所以∠FDC=∠C 所以AF∥CE
2007年的3倍。
七、公平。,八、(1)因為∠NDE+∠AED=90°, ∠BEF+∠AED=90°
所以∠NDE=∠BEF 因為BF平分∠CBM 所以∠EBF=90°+45°=135°, 因為AN=AE 所以∠ANE=∠AEN=45° ∠DNE=180°-∠ANE=135° 所以∠EBF=∠DNE 又DN=EB 所以△DNE≌△EBF 所以NE=BF(2)當DN=EB時。
第二篇:初一數(shù)學下學期期末試卷 1998
初一數(shù)學下學期期末試卷 1998.7
學校__________ 班級__________ 姓名__________
題號
一
二
三
四
五
六
七
八
九
總分
分數(shù)
一、填空題:(每小題2分,共20分)
(1)已知方程2x-3y+4=0,用含有y的代數(shù)式表示x,應(yīng)寫成__________。
(2)已知x=5,y=7滿足kx-2y=1,則k=__________。
(3)不等式2x-4<0的解集是__________。
(4)用科學記數(shù)法表示0.0987為__________。
(5)__________。
(6)如圖,則∠1=__________。
(7)如圖,∠3的同位角是__________。
(8)東北方向是北偏東__________。
(9)把“兩條直線相交只有一個交點”改寫為“如果……,那么……,”的形式為____________________。
1(10)已知A、B、C三點都在直線l上,且AB=5cm,BC=6cm,則AC的長為__________。
二、選擇題:(每小題3分,共24分)
每小題所給的四個選項中有且只有一個是正確的,請把正確選項前的字母代號填入括號內(nèi)。
(1)一元一次不等式的解集是()。
(A)x>-8(B)x<-8(C)x>-2(D)x<-2
(2)下面在數(shù)軸上表示求不等式組解集的正確過程是()。
(3)下面計算錯誤的有()。
① ②
③ ④
⑤ ⑥
(A)6個(B)5個(C)4個(D)3個
(4)下面乘法公式中正確的有()。
①
②
③
④
(A)4個(B)3個(C)2個(D)1個
(5)下面作圖語句中正確的是()。
(A)延長直線PQ(B)作射線MN的中點O
(C)作線段AB的平分線MN(D)作∠AOB的平分線OC
(6)下列命題中直命題是()。
(A)兩個銳角一定互為余角
(B)互補的兩個角互為鄰補角
(C)等角的余角相等
(D)若AM=MB,則M點是線段AB的中點
(7)小于平角的角按大小分成三類為()。
(A)銳角、直角、鈍角(B)內(nèi)錯角、同位角、同旁內(nèi)角
(C)周角、平角、直角(D)對頂角、補角、余角
(8)在平面幾何中,下列命題中假命題是()。
(A)平行于同一直線的兩條直線平行
(B)過兩點有且只有一條直線
(C)過一點有且只有一條直線與已知直線平行
(D)過一點有且只有一條直線與已知直線垂直
三、計算下列各題:(第(1)~(6)小題每小題2分,第(7)、(小題3分,共18分)。
(1)__________
(2)__________
(3)__________
(4)5x·(0.2x-0.4xy)= __________
(5)__________
8)小題每
(6)__________
(7)
解:
(8)
解:
四、解下面一次方程組,一元一次不等式組:(每小題5分,共10分)。
(1)
解:
(2)
解:
五、畫圖題:(用刻度尺,三角板,量角器或尺規(guī)作圖均可,不寫作法,只要求把圖畫準確。)(每小題1分,共3分)。
(1)過A點作BC的平行線M;
(2)過A點作BC的垂線,垂足為點D;
(3)線段__________的長度是A點到BC的距離。
六、在下面推理過程中填空,并在括號內(nèi)填注該步推理的依據(jù)(每空1分,共7分)
如圖,AD//BC(已知),∴∠DAC=__________()。
又∵∠BAD=∠DCB(已知),∴∠BAD-∠DAC=∠DCB-__________,即∠__________=∠__________。
∴AB//__________()。
七、列方程組解應(yīng)用題:(每小題5分,共10分)
(1)用3元5角買了10分、20分、50分三種郵票共18枚,10分郵票與20分郵票的總面值相同,求三種郵票各買了多少枚。
解:
(2)∠ABC比∠MNP的補角的,∠ABC的余角的比∠MNP的余角大,求∠ABC與∠MNP的度數(shù)。
解:
八、證明題:(本題5分)
已知:如圖∠BDE+∠ABC=,BE//FG。
求證:∠DEB=∠GFC。
證明:
九、已知關(guān)于x、y的方程組的解與方程組的解相同,求m、n的值。(本題3分)
解:
參考答案及平分標準
一、填空題
(每小題2分,共20分)
(1)(2)3
(3)x<2(4)
(5)4xy(6)100
(7)<7(8)45
(9)如果兩條直線相交,那么只有一個交點,(10)11cm或1cm(只寫出其中一個的,可給1分)
二、選擇題(每小題3分,共24分)
BBAD DCAC
三、計算下列各題:(第(1)~(6)小題每小題2分,第(7)(8)小題每題3分,共18分)
(1)(2)(3)(4)
(5)(6)
(7)(結(jié)果錯誤,過程正確的可給1分)
(8)原式………………………………………………1分
…………………………………………3分
四、解下面一次方程組,一元一次不等式組(每小題5分,共10分)
(1)答案:
正確消元…………………………………………………………………2分
正確解出一個未知數(shù)的值………………………………………………4分
完整寫出方程組的解……………………………………………………5分
(2)答案:。
正確解出不等式組中的每個不等式的解集,各2分。
得出正確答案再得1分。
第一個不等式的解集寫成x<8的,或最后解得-3的,其它正確,可得4分。
五、畫圖題。(每小題1分,共3分)
六、(每空1分,共7分)
∠BCA,(兩直線平行,內(nèi)錯角相等)
∠BCA,∠BAC,∠DCA,DC,(內(nèi)錯角相等,兩直線平行)
七、列方程解應(yīng)用題:(每小題5分,共10分)
(1)解:設(shè)10分郵票買了x枚,20分郵票買了y枚,50分郵票買了z枚?!?分
則……………………………………………………………………3分
解之得………………………………………………………………………………4分
答:10分郵票買了10枚,20分郵票買了5枚,50分郵票買了3枚?!?分
(2)解:設(shè)∠ABC為,∠MNP為?!?分
則…………………………………………………………………3分
解之得………………………………………………………………………………4分
答:∠ABC為,∠MNP為。…………………………………………………………5分
八、證明題。(本題5分)
證明:∵∠BDE+∠ABC=,∴DE//BC,…………………………………………………………………………………2分
∴∠DEB=∠EBF?!?分
∵BE//FG,∴∠EBF=∠GFC,……………………………………………………………………………4分
∴∠DEB=∠GFC?!?分
九、解:∵方程組的解與方程組的解相同,∴的解與方程組的解相同。
解方程組得…………………………………………………………1分
把代入方程組中得
解這個方程組得……………………………………………………………………2分
把代入my=-1中得
∴?!?分
第三篇:2012年初一數(shù)學下學期期末試卷
七年級下冊數(shù)學期中試卷
(滿分:100分鐘
時間:120分鐘)
姓名:________ 班級:________ 分數(shù):_________
一、填空題(共10小題,每小題2分,滿分20分)。
1、如圖所示,直線AB、CD相交于點O,∠BOD=40°,OA平分∠EOC,則∠EOD的度數(shù)為_______。
第1題
第2題
第10題
2、如圖所示,△ABC中,點D、E分別在AB、BC邊上,DE∥AC,∠B=50°,∠C=70°,那么∠1的度數(shù)為________。
3、已知?2x?3y?4??x?3y?7?0,則xy-5的值為。
4、已知P(-a,b)在第一象限,則B(a-b,b+1)在第________象限。
5、正五邊形的每一個外角為________度。
??4x?3y?
16、若方程組?的解x和y的值相等,則k=____.
kx?k?1y?3????
7、已知△ABC的兩邊長分別為5,13,若周長為整數(shù),則周長的最大值為________。
8、已知等腰三角形有一個內(nèi)角為80°,則另兩個的內(nèi)角為________。
9、分別剪一些邊長相同的正三角形、正方形、正五邊形、正六邊形,如果只用其中一種正多邊形鑲嵌,那么有_____種正多邊形能鑲嵌成一個平面圖形.
10、如圖示,所有正方形的中心均在坐標原點,且各邊與x軸或y軸平行,從內(nèi)到外,它們的邊長依次為2,4,6,8…,頂點依次用A1,A2,A3,A4…表示,則頂點A2012的坐標是_________。
二、選擇題(共10小題,每小題2分,滿分20分)。
11、如圖所示,E是AB上一點,F(xiàn)是DC上一點,G是BC延長線上一點,若∠AEF=∠EFC,∠A=∠BCD,則可得到的平行結(jié)論是()
A、AD∥EF,AB∥CD
B、AB∥CD,EF∥BG C、AD∥EF,BC∥EF
D、AD∥BG,AB∥CD
第11題
第12題
12、如圖,∠PQR等于138°,SQ⊥QR,QT⊥PQ.則∠SQT等于()A、42°
B、64°
C、48°
D、24°
13、方程組?x?ay?1bx?8y?1?x?12?的解是y?1?434,則a+b的值是()
A.-8
B.8
C.D.0
14、下列命題正確的是()A、三角形外角和是180°
B、同位角相等
C、十邊形內(nèi)角和為1440°
D、同一平面內(nèi)三條直線a,b,c,若a⊥b,b⊥c,則a⊥c
15、如圖所示,在直角三角形ABC中,∠BAC=90°,AD⊥BC,BE平分∠ABC交AD于E,EF∥AC,則下列結(jié)論不一定成立的是()
A、∠1=∠2
B、∠3=∠C
C、∠3=∠4
D、∠5=∠6
第15題
第16題
第19題
第20題
16、如圖,將三角尺的直角頂點放在直尺的一邊上,∠1=30°,∠2=50°,則∠3的度數(shù)等于()
A、50°
B、30°
C、20°
D、15°
17、如圖,點A、B、C、D、E、F是平面上的6個點,則∠A+∠B+∠C+∠D+∠E+∠F的度數(shù)是()A、180° B、360° C、540° D、720°
18、銳角三角形中,最大角α的取值范圍是()A、60°≤α<90°
B、60°<α<180° C、60°<α<90° D、0°<α<90°
19、如圖,矩形ABCD的邊AB在y軸上,點O為AB的中點.已知AB=4,邊CD交x軸于點E.則點C的坐標為()A、(3,2)
B、(2,3)
C、(3,-2)
D、(-3,-2)20、如圖,把矩形ABCD沿EF對折后使兩部分重合,若∠1=50°,則∠AEF=()A、110°
B、115°
C、120°
D、130°
三、計算題(每小題5分,共10分)
?x?1?2y?x?y?1?
21、解方程組:(1)?(2)?3
2x?3y?5??2(x?1)?y?11?
四、解答題(50分)。
22、(5分)如果方程組??ax?by?4?ax?by?6與方程組??3x?y?5?4x?7y?1 的解相同,求a,b的值。
23、(5分)如圖,EF∥AD,∠1=∠2.說明:∠DGA+∠BAC=180°.請將說明過程填寫完成.
解:∵EF∥AD,(已知)
∴∠2=_______。()又∵∠1=∠2,()
∴∠1=∠3,()
∴AB∥________,()
∴∠DGA+∠BAC=180°.()
24、(10分)如圖,已知△ABC中,∠B=65°,∠C=45°,AD是BC邊上的高,AE是∠BAC的平分線,求∠DAE的度數(shù)。
25、(10分)已知:如圖所示,∠ABC=66°,∠ACB=54°,BE是AC邊上的高,CF是AB邊上的高,H是BE和CF的交點,求:∠ABE,∠ACF和∠BHC的度數(shù).
26、(10分)某中學參加中學生運動會,獲得金牌數(shù)與銀牌數(shù)之比是5:6,銅牌數(shù)比金牌數(shù)的2倍少5塊,金牌數(shù)的3倍與銀牌數(shù)之和等于42塊,求該校獲取三種獎牌各多少塊?若組委會規(guī)定,單獨獲取12塊以上(含1
2塊)金牌的學校,將授予團體優(yōu)勝獎,那么該學校是否能獲得這個獎項?
27、(10分)已知如圖射線AB∥CD,P為一動點,∠BAP與∠DCP的平分線AE與CE交于點E(1)當P運動到線段AC上時,∠APC=180°(圖1),此時∠AEC為多少度?(要求證明)(2)當P運動到如圖2的位置時,猜想∠AEC與∠APC 的關(guān)系,并說明理由?(3)當P運動到如圖3的位置時,上述結(jié)論還成立嗎?(不要求說明理由)
第四篇:初一下冊數(shù)學期末試卷
優(yōu)學教育
內(nèi)部資料
七 年 級 數(shù) 學 試 題
一、精心選一選(共10個小題。每小題3分,共30分)1.下列計算正確的是().
A、x?x?2x B.(x2)3?x5 C.x?x?x D.(xy)4?x4y4 2.下列命題中正確的有().
①相等的角是對頂角; ②若a//b,b//c,則a∥c;
③同位角相等; ④鄰補角的平分線互相垂直. A、0個 B.1個 C.2個 D.3個 3.已知a
?x?1?05.利用數(shù)軸確定不等式組?的解集,正確的是().
x?2?
6.已知點A(1,0), B(0,2),點P在x 軸上,且△PAB的面積為5,則點P的坐標為()
A、(-4,0)
B、(6,0)
C、(-4,0)或(6,0)
D、無法確定
7.一個多邊形的每一個外角都等于40。,那么這個多邊形的內(nèi)角和為(). A、1260° B.900° C、1620° D.360° 8.已知(x?2)(1?kx)化簡后的結(jié)果中不含有x的一次項,則k的值為().
優(yōu)學教育
內(nèi)部資料
A、一1 B.—C、D.1 229.若關(guān)于x,y的二于一次方程組?k的值為().
?x?y?4k的解也是二元一次方程x?2y?10的解,則
?x?y?2k A、2 B.一2 C、0.5 D.一0.5 10.已知正整數(shù)a、b、c中,c的最大值為6,且a?b?c,則以a、b、c為三邊的三角形共有().
A、4個 B.5個 C.6個 D.7個
二、細心填一填(共10個小題,每小題2分.共20分)
11.若點P(2一m,3m+1)在x軸上,則m=___________。
12.如圖,AB∥CD,?A=32°,?C=70°,則?F=___________。
13.計算:(x?1)2?(2x?3)(2x?3)=___________。
14.如圖,四邊形ABCD中,?B=40°,沿直線MN剪去
?B,則所得五邊形AEFCD中,?1+?2=_________°。
15.已知??x?1?x?2和?都是方程ax?by?1的解,y?1y??2??則a + b=___________.
16.如圖,△ABC中,?B=30°,?C=74°,AD平分?BAC,AE?BC于E,EF?AD于F,則?AEF=___________。17.若點P在第四象限,且距離每個坐標軸都是3個單位長
度,則點P的坐標為___________。
18.已知OA?OB,?AOC:?AOB=2:3,則?BOC=___________°.
優(yōu)學教育
內(nèi)部資料
19.在一塊邊長為10米的正方形草坪上修了橫豎各兩條寬都為1.5 米的長方形小路(圖中陰影部分)將草坪分隔成如圖所示的圖案,則圖中未被小路覆蓋的草坪的總面積為___________平方米. 20.多項式x2?2xy?2y2?2y?5的最小值是___________。
三、認真做一做(共5個小題,每小題5分,共25分)
232232?b(a?ab)?8a(ab?ab)?3ab,其中a=5,b= —2. 21.先化簡,再求值: ???
?x2y??1??22.解方程組:?4. 3??2(x?y)?3(x?y)??19
?2x?(x?2)?4?
23、解不等式組?1?2x
?x?1??
324、李紅在學校的研究性學習小組中負責了解初一年級200名女生擲實心球的測試成績.她從中隨機調(diào)查了若干名女生的測試成績(單位:米),并將統(tǒng)計結(jié)果繪制成了如下的統(tǒng)計圖表(內(nèi)容不完整).
優(yōu)學教育
內(nèi)部資料
請你結(jié)合圖表中所提供的信息,回答下列問題:(1)表中m=_____________,n=____________;(2)請補全頻數(shù)分布直方圖;
(3)在扇形統(tǒng)計圖中,6≤x<7這一組所占圓心角的度數(shù)為____________度;
(4)如果擲實心球的成績達到6米或6米以上為優(yōu)秀,請你估計該校初一年級女生擲實心球的成績達到優(yōu)秀的總?cè)藬?shù).
25.如圖,這是人民公園的景區(qū)示意圖.以中心廣場為原點,分別以正東、正北方向為x 軸、y軸正方向建立平面直角坐標系,規(guī)定一個單位長度代表1m長.已知各建筑物
都在坐標平面網(wǎng)格的格點上,且東門坐標為(400,0).
(1)請寫出圖中下列地點的坐標:
牡丹園_________________;
游樂園_________________;(2)連接音樂臺、湖心亭和望春亭
這三個地點,畫出所得的三角
形.然后將所得三角形向下平
移200個單位長度,畫出平移
后的圖形;
(3)問題(2)中湖心亭平移后的對應(yīng) 點的坐標為________________。的 優(yōu)學教育
內(nèi)部資料
四、解答題(共5個小題。每小題5分。共25分)26.在一次活動中,主辦方共準備了3600盆甲種花和2900盆乙種花,計劃用甲、乙兩種花
搭造出A、B兩種園藝造型共50個.搭造要求的花盆數(shù)如下表所示:
請問符合要求的搭造方案有幾種?請寫出具體的方案.
27、如圖,長方形ABCD中,AB=a,BC=b,AC=c,其中a
AC剪開。
(1)用所得的兩個三角形可以拼出幾個與長方形衄形狀不同但面積相等(即要求沒有縫隙,也不重疊)的凸四邊形?請分別畫出所有可能的圖形.
(2)在問題(1)拼接所得的四邊形中,周長的最大值與最小值分別為多少?請用a、b、c表示出來.優(yōu)學教育
內(nèi)部資料
28.如圖(6),A島在B島的北偏東30°方向,C島在B島的北偏東80°方 向,A島在C島北偏西40°方向。從A島看B、C兩島的視角∠BAC是多少?
29.已知:如圖,六邊形ABCDEF中,?A+?B+?C=?D+?E+?F,猜想可得六邊
形A BCDEF中必有兩條邊是平行的.
(1)根據(jù)圖形寫出你的猜想:_________ ∥_________;(2)請證明你在(1)中寫出的猜想.
優(yōu)學教育
內(nèi)部資料
30.閱讀理解
如圖a,在△ABC中,D是BC的中點.如果用S?ABC表示
?ABC的面積,則由等底等高的三角形的面積相等,可得
1S?ABC.同理,如圖b,在?ABC中,21 D、E是BC的三等分點,可得S?ABD?S?ADE?S?AEC?S?ABC. S?ABD?S?ACD?結(jié)論應(yīng)用
已知:?ABC的面積為42,請利用上面的結(jié)論解決下列問題:(1)如圖1,若D、E分別是舳、AC的中點,CD與 BE交于點F,△DBF的面積為____________; 類比推廣
(2)如圖2,若D、E是AB的三等分點,F(xiàn)、G是AC 的三等分點,CD分別交BF、BG于M、N,CE分別
交BF、BG于P、Q,求△BEP的面積;
(3)如圖3,問題(2)中的條件不變,求四邊形EPMD的面積。
第五篇:初一期末試卷
一、先來測試一下你的聽力水平,可得先認真看題喔!(每小題1分,共20分)A)根據(jù)所聽到的句子將正確的序號填到相應(yīng)的橫線上(聽兩遍,5分)()1.A.B.C.B.根據(jù)所聽到的句子,選擇正確的答語。(聽兩遍)()6.A.You can.B.I’d like a shirt.C.Thank you.()7.A.In a bookshop.B.In a sports shop.C.In a flower shop.()8.A.Thank you.B.The same to you.C.Happy Christmas.()9.A.Yes, I like.B.It’s big and beautiful.C.I like reading.()10.A.Less than 10 hours.B.Seldom.C.5 yuan each day.C)根據(jù)對話內(nèi)容,選擇問題的正確答案。(聽兩遍)()11.How does Betty keep healthy? A.Eat healthy food.B.Do some exercise.D A and B()12.What’s the blouse made of?
A.Cotton.B.Silk.C.Leather.()13.What does the woman think of the coat? A.It’s too long.B.It’s too short.C.It’s too expensive.()14.Who buys Daniel the sports clothes ? A.Daniel’s mother.B.Daniel’s father.C.Daniel’s brother.()15.How much is the red T-shirt? A.¥15 B.¥20 C.¥25.D.聽錄音短文,選擇正確的答案.(聽兩遍)()16.What is the writer talking about? A.A healthy diet.B.A shopping mall.C.His fashion design.()17.How many clothes does he design ? A.Three.B.Four.C.Five.()18.What are the trousers made of ? A.They are made of wool.B.They are made of leather.C.They are made of cotton.()19.Is the shirt white? A.No, it’s black.B.No, it’s red.C.Yes, it is.()20.What does the writer think of his design? A.It’s very bad.B.It’s very great.C.He doesn’t like it.二.單項選擇是你的拿手好戲,試試吧?。款}1分,共15分)
()21.---It takes me half hour to play volleyball every day.---Me too.A.a , a B.an, a C.the, the D.an, /()22.He'll arrive at Shanghai _______ the afternoon May 10th A.on, on B.in, in C.on,of D.at, in()23.The shop isn’t ________now.It ________ at 9.00 every morning.A.opened, open B.open, opens C.opening, opens D.opened, opens()24.It's important for us __________ English well.A.to learn B.learning C.learn D.learns()25.Uncle John __________ exercises.It's not good for his health.A.sometimes B.seldom C.often D.always()26.——__________are these trousers? ——They're ¥200.A.How B.How many C.What D.How much()27.Look, our English teacher so beautiful in her new dress.A.look B.is looking C.looks D.is singing()28.— Can I have ________cakes, please? — Sorry, I don’t have ________cakes in my fridge.A.some, any B.any, any C.any, some D.some, some()29---__________ does your father play computer games at night?---Once a week.A.How often B.How much C.How long D.How many()30.This pair of jeans 300 yuan.She can’t pay for them.A.pays B.spends C.cost D.costs()31.The Shopping mall is a wonderful place ________friends.A.meet B.to meet C.meeting D.meets()32.I like this pair of football boots.Can I _________ ,please? A.try on them B.try on it C.try it on D.try them on()33.My brother spends half an hour ________ computer games every day.A.to play B.play C.playing D.plays()34.The shop is small but there are ________ people in it.A.too much B.many too C.too many D.much too()35.---Would you like something to drink?---_______.I’d like a cup of tea.A.Yes, please.B.No, thanks.C.I don’t want anything.D.Don’t give me any tea.三.完形填空(每題1分,共10分)下列各題都有代號為A、B、C、D的四個答案供選擇,請選出最佳答案。
The Green family usually go to the park on Sunday.36 take some bread, meat and 37 cola with them.They are now in the 38.The sun is shining and the birds are singing.It’s a 39 day.Mr.Green is wearing a blue T-shirt.He is 40 by the river.Mrs Green is 41 under the tree.She is wearing a green dress and a pair of 42.She is drinking some 43.Peter and Alice are flying a kite.Jack is playing football.He is good at 44.The Green family are very 45 today.()36.A.She B.he C.They D.Them()37.A.a pair of B.a C.a cup of D.a bottle of()38.A.hill B.room C.park D.shop()39.A.sunny B.cold C.rainy D.snowy()40.A.skating B.swimming C.boating D.fishing()41.A.flying B.doing C.kicking D.sitting()42.A.hat B.sunglasses C.suit D.shoe()43.A.oranges B.cakes C.cola D.meat()44.A.it B.them C.this D.one()45.A.happy B.funny C.sad D.hungry 四.試試自己的閱讀理解能力吧!(每題1分,共15分)(A)Sunny English Club For students 16:00 ~ 18:00 Every Saturday 200 yuan a month 9 Zhou Yu Street Tel: 3786290 Foreign teachers, English songs and films and more!Ocean Museum 9:00~17:00 From Thursday to Sunday ticket: 50 yuan 132 Xue Yuan Street Tel: 5439871 Show you a full picture of sea lives!Health Centre 9:00 ~ 17:00 16 Yong Le Street Tel: 3801451 Free examinations(檢查)for those over 70 Give you good advice to keep healthy!()46.You will pay _____ if you want to stay in the English club for half a year.A.300 yuan B.600 yuan C.1,200 yuan D.2,400 yuan()47.You can visit Ocean Museum ______.A.on Saturday B.on Wednesday C.on Monday D.any time()48.One can get free(免費)examinations in Health Centre if he is ______.A.9 B.17 C.67 D.73(B)Shopkeeper: Welcome to Angie’s.Can I help you?
Maria: I’m looking for some clothes.Is there a discount(打折)now? Shopkeeper: Everything on these two shelves is on sale(銷售).Maria: Thanks.The sweater is nice, but it looks a little large.Do you have a smaller one? Shopkeeper: Let me see.Oh, here’s one.Would you like to try it on in the fitting room.Maria: Sure, thanks.A moment later Shopkeeper: How do you like it? Maria: Not too bad and I like its colour.I’ll take it.How much is it? Shopkeeper: It’s twenty-four dollars.Maria: Here is the money.Shopkeeper: Thanks.Have a nice day.Maria: Thanks.Bye.()49.What is Maria doing? A.She is buying some food.B.She is shopping.C.She is watching TV.D.She is visiting the park.()50.What is on sale? A.Shoes on the second shelf.B.Nothing is on sale.C.Clothes on those two shelves.D.All the shoes in the shop.()51.The underlined phrase ‘fitting room’ means _________ in Chinese.A.適合的房間 B.洗衣房 C.試衣間 D.大賣場()52.How much is the smaller sweater? A.¥15.B.¥24.C.$ 42 D.$ 24.(C)Mr.Reece is a farmer(農(nóng)民).He and his wife grow a lot of things.They work very hard.One day, Mr.Reece says to his wife, “Let’s go to the city next Sunday.We can have a good lunch there, and then we’ll go to the cinema.”
His wife is very happy when she hears this, because she and her husband always eat a lot.She doesn’t like cooking three times a day.They go to the city by train the next Sunday.They walk about for an hour.When it is twelve o’clock, they want to have a meal.They look at some restaurants.Out of one of them is a notice(布告), “Lunch12:30 to 2:30 , 1.5 dollars(美元).”
“Well, that’s good,” says Mr.Reece, “we can eat for two hours for 1.5 dollars here.That’s too cheap.This is the place for us.”()53.Mr.Reece usually work ____________.A.on the farm B.in the city C.in the restaurant D.in the park()54.Mr.Reece and his wife go to the city_____________.A.to have a good lunch B.to see a film C.to do some shopping D.A and B()55.When do Mr.And Mrs.Reece want to have lunch? A.At about 11:00 B.At about 12:00 C.At about 12:30 D.At about 2:30()56.We can see that Mr.Reece ________________.A.is very short B.is very tall C.understand(理解)the notice D.doesn’t understand the notice
(D)All students need to have good habits(好習慣): When you have good study habits, you learn things quickly.You also remember them easily.Do you like to study in the living room? This is not a good place because it is usually too noisy.You need to study in a quiet place, like your bedroom.A quiet place will help you only think about one thing, and you will learn better.Before you begin to study, do not forget to clean your desk.A good desk light(臺燈)is important, too.You’ll feel tired easily if there is not enough light(光線).()57.When you have good study habits, you will.A.learn things quickly B.remember things easily C.think about one thing D.both A and B()58.The living-room is not a good place for study because it is too.A.quiet B.noisy C.good D.clean()59.You should remember to before you study.A.clean the desk B.tidy the room C.turn on the light D.go to the bedroom()60.The best title(標題)for this passage is.A.Study in the bedroom B.Good study habits C.How to study D.Desk light is important
第二部分 主觀題(40分)五.詞匯運用(共15分)
A)根據(jù)首字母、中文或英文提示,寫出下列單詞(每題1分,共5分)61.How many _______ are there in an hour? There are 60.62.He likes sports.He needs a lot of__________(能量).63.Why do you like fishing?(因為)it’s very interesting.64.He _______(not often)exercises, so he is not very healthy.65.Her pink hair clip _________(go well with)her white blouse.B)用括號中詞的適當形式填空(每題1分,共5分)
66.Today is __________(child)Day.I will have a good time today.67.My mother buys two kilos of(potato)from the market.68.There are all kinds of things on those _________(shelf)at the supermarket.69.We play football ________(two)a week on the playground after school.70.If you want to keep ________(health), you must do some exercise.C)用括號內(nèi)的動詞的適當形式填空(每題1分,共5分)
71.Look!Your mother(chat)with her friends on the phone.72.___________(not open)the window.It’s too cold outside.73.Mary_______(not go)to the supermarket with her mother on Sundays.74.---Where is your brother?---He _______(eat)a cake in the dinning room.75.Do you enjoy_________(sit)in the sun to chat with friends in winter ?
六、句型轉(zhuǎn)換,根據(jù)要求在括號中填入所缺的單詞。(每格0.5分共5分)76.There are some toys in the box.(改為一般疑問句)_________ there _________ toys in the box? 77.Millie spends half an hour reading English every morning.(改為同義句).It takes Millie half an hour ______ English every morning.78.My brother often lies on the bed after dinner.(用now 改寫句子)My brother _______ _________ on the bed now.79.The students do morning exercises for twenty minutes.(劃線提問)_________ _________ do the students do morning exercises? 80.Mum is cooking some fish in the kitchen.(劃線提問)_________ is Mum _________ in the kitchen? 七.補全對話,根據(jù)首字母提示寫出單詞,使對話完整。(每格1分,共5分)Shopkeeper: What can I do for you? Boy: I(81)w like a teddy bear for my friend Jack.Today is his birthday.Shopkeeper: The teddy bears are cool!Would you like the small one or the big one? Boy: How(82)m is the small one? Shopkeeper: It is only 28 yuan.Boy: I'd like the big one.Shopkeeper: Oh, that's very good, but it is(83)e..Boy: What is the(84)p of it? Shopkeeper: 50 yuan.There is a discount(打折)on it.I can give you a 10% discount.Boy: OK.I will(85)t it.81.82.83.84.85.八、任務(wù)型閱讀 閱讀下列短文,完成所給的問題。(每題1分,共5分)Most girls care(關(guān)心)about what clothes they wear, but my 11-year-old cousin Betty does not care much about it.Her parents often take her to clothes shops, but she never asks them to buy any new clothes for her.Betty's sister Sally is two years older than Betty.She has old clothes, and Betty likes to wear them.She says this can help save(節(jié)省)lots of money for her parents.However, when Betty's parents buy books for her, she is always very happy.She likes reading a lot.She has a lot of books, but she still wants more.Some of her friends say she is a girl of books.Maybe they are right.But some peole say Betty is out of fashion(不時尚)and her life is not happy.What do you think of it? Is Betty really a girl out of fashion? 86.Betty does not care much about 87.take Betty to clothes shop.88.Sally is years old.89.Betty likes best.90.Betty likes wearing old clothes because she wants to save
九、書面表達
假如你叫王莉,13歲。請用英語寫一篇介紹自己相關(guān)情況的書面材料。內(nèi)容要點如下:1.擅長于數(shù)學和英語,樂于幫助同學。2.喜歡聽音樂,打籃球;
3.喜歡吃健康食品(如:水果、蔬菜、魚和牛奶);對身體有好處。4.喜歡和同學去購物中心買東西;
5.喜歡牛仔褲和運動鞋,因為輕便舒適。
注意:1.字數(shù)70字左右,書面材料的開頭已為你寫好,不計入總詞數(shù)。My name is Wang Li and old.___________________________________
I’m
years ______________________________________________________________________
南通市通州區(qū)平潮實驗初中2012—2013學(上)期末模擬測試卷 初一英語
聽力材料及參考答案
A.根據(jù)所聽句子內(nèi)容選擇相應(yīng)的圖片(聽兩遍)1.I like eating vegetables.They are good for my health.(B)2.I like dancing very much.I often go to the dancing lessons.(A)3.There is a flower shop over there.Let’s buy some for my mother.(C)4.I have a new car.Its number is 36463.(C)5.We usually play ping pong on the playground after class.(A))B.根據(jù)所聽到的句子,選擇正確的答語。(聽兩遍)6.What can I help you?(B)7.Where can I buy a basketball?(B)8.Happy New Year, Betty!(B)9.What do you think of your new school?(B)10.How often do you eat snacks?(B)C.根據(jù)對話內(nèi)容,選擇問題的正確答案。聽兩遍。11.M:Are you healthy, Betty? W:Yes,of course.I am a healthy person.M:How can you stay healthy? W:I usually eat healthy food and do some exercise every day.(C)12.A: Our English teacher looks beautiful in the new blouse.B: Yes, I think so.A: Is it made of cotton? B: No, it’s made of silk.It feels every cool in summer.(B)13.M: What about this red coat, Madam? W:Oh, it’s too expensive.Do you have a cheaper one?(C)14.A: Daniel, you look smart in the sports clothes today.B: Thank you very much.A: Who buys them for you? B: My father buys them for me as a birthday present.(B)15.M: Excuse me, how much is the T-shirt? W: The red T-shirt is 25 yuan for each.The blue one is 15 yuan each.(C)D. 聽錄音短文,選擇正確的答案(讀兩遍)Hello, everyone!Today I will talk about my fashion design.Today I designed some clothes.They are jacket, trousers, shirt and trainers.First, I design the jacket.It is short and black.It’s made of wool.Then, I design the trousers.They are long and black.They are made of cotton.Next, I design the shirt.It’s red.It’s made of silk.Afterwards, I design the trainers.They are white and blue.They are made of leather.Finally, I put them together and look carefully.I am very happy.I like my design.(CBCBB)參考答案:
一、BACCA BBBBB CBCBC CBCBB
二、DCBAB DCAAD BDCCA
三、CDCAD DBCAA
四、CAD BCCD ADBD DBAB
五、A、minutes, energy , Because, seldom , matches B、Children’s, potatoes, shelves, twice, healthy C、is chatting, Don’t open, doesn’t go.is eating, sitting 六, 76.Are, any, 77.to read 78.is lying 79.How long 80.What, doing
七、81, would 82.much 83.expensive 84.price 85.take
八、86.clothes 87.Betty’s/her parents 88.13 89.reading/books 90.money
九、My name is Wang Li and I’m 13 years old.I am good at Maths and English.I like to help my classmates.I enjoy listening to music and playing basketball.I like having healthy food such as /like fruit vegetables, fish and milk.It’s good for my health.I like doing some shopping in the shopping mall with my classmates.I love wearing jeans and trainers because they are light and comfortable.文 章來 源蓮山 課件 w w w.5Y k J.cO m